Home / 71,308.12-98,406.21-39,477.01

Finding the Fourth Proportional to 71,308.12, 98,406.21 and 39,477.01

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Solution

The fourth proportional to 71,308.12, 98,406.21 and 39,477.01 is: 54,478.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,308.12 : 98,406.21 = 39,477.01 : x
  2. Step 2: Convert to fraction form
    71,308.12/98,406.21 = 39,477.01/x
  3. Step 3: Cross multiply
    71,308.12x = 98,406.21 × 39,477.01
  4. Step 4: Simplify right side
    71,308.12x = 3,884,782,936.23
  5. Step 5: Solve for x
    x = 3,884,782,936.23/71,308.12
  6. Step 6: Final answer
    x = 54,478.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.